Need Quick help in Cordova for File Reader and File Writer

Hi . I need some one to quickly help me in one of my cordova project .. I created my app and in that I need to create a file and write some content and read the same content in another page. I followed this [login to view URL] in chrome its working but when I build the app its not working some how :( I need some one to take the Team Viewer or any remote desktop and solve the issue on my system. Its something very small we are not able to resolve :(